Pass ANGLE rules file descriptor through JNI

We are now loading the json rules from ANGLE's APK, passing
that through to the loader via a file descriptor.

Bug: 80239516
Test: Manual build, ensure we can inspect rules from modified APK
Test: cts-tradefed run singleCommand cts -m CtsAngleIntegrationHostTestCases
Change-Id: I9387d8b4a40cd035c40db9466a13666b262c5724
(cherry picked from commit eeffc9df36d117ec35ea5aaf9d62b8fea733b298)
diff --git a/opengl/libs/EGL/Loader.cpp b/opengl/libs/EGL/Loader.cpp
index cceaa8e..c8e013f 100644
--- a/opengl/libs/EGL/Loader.cpp
+++ b/opengl/libs/EGL/Loader.cpp
@@ -523,6 +523,9 @@
     const char* app_name = android_getAngleAppName();
     const char* app_pref = android_getAngleAppPref();
     bool developer_opt_in = android_getAngleDeveloperOptIn();
+    const int rules_fd = android_getAngleRulesFd();
+    const long rules_offset = android_getAngleRulesOffset();
+    const long rules_length = android_getAngleRulesLength();
 
     // Determine whether or not to use ANGLE:
     ANGLEPreference developer_option = developer_opt_in ? ANGLE_PREFER_ANGLE : ANGLE_NO_PREFERENCE;